Sylvania



UNITED STATES y PATENT OEEIcE.

SERENA BERGNER AND CHARLES E. SAJOUS, OF PHILADELPHIA, PENN- SYLVANIA, EXEOUTORS OF THEODORE BERGNER, DECEASED.

DUNlPlNG FURNACE-'GRA'I'E SPECIFICATION forming part of Letters Patent No. 349,423, dated September 21, 1886.

Application mea Mmn es, rest.

Serial No. 196,731. (No model.)

To all whom, it may concern:

Be it known that THEoDoRE BERGNER,late a citizen of the United States, of the city and county of Philadelphia and State of Pennsylvania, (deceased,) has made certain new and useful Improvements in Dumping Furnace- Grates; and we, SERENA BERGNEE and CHARLES E. SAJoUs, citizens of the United States, residing at the city of Philadelphia,A

in the county of Philadelphia and State of Pennsylvania, do hereby declare that the following is a full, clear, and exact description of the invention, reference being had to the accompanying drawings, which form part of this specification.

The invention relates to that class of furnace-grates which may be designated under the general term of duinping-grates 5 and it consists of a combination of devices whereby a grate which is hinged at one end to the ash-pit of the furnace may be conveniently lowered at the other end at the option of the attendant, thereby giving the grate itself an inclined position, so that the contents of the lire-box resting upon the grate, as is easily understood,

4may be withdrawn from the same in whole or in part, as required, after which the grate is restored to its original position empty, or with a portion of its charge, as the case may be; and itfurther consists in providing suoli mechanism as will he reliable in its functions, and not easily liable to get out of order.

Previous to the invention dumping-grates .have been widely used for the purpose of dropping part of the contents ofthe lire-box, and so far as we are aware, devices have been contrived to hold up a portion of the fire by means of so-called cropper-bars forming, as it were, atemporary grate which crops off the upper portion of the charge, when the grate, being pivoted at one end and held in working position at the other end, is caused to drop freely with the end not pivoted, and thereby permits that part of the charge contained between the grate and the cropper-bars to fall into the ash-pit; but so far as weA are aware no successful means have been devised to limit the motion of the grate and afford other conveniences as hereinafter more fully specified.

In .the accompanying drawings, Figure lis a vertical longitudinal section,through the ashpit,of afurnacehaving the improved dumpinggrate in position ready to receive the charge. Fig. 2 is a section in the direction x a: of Fig. l. -Fig.,3 is aV vertical longitudinal section througlisame ash-pit as Fig. 1, with the improved dumping-grate in its most extreme inclined position. Fig. 4 is a front view of the same ash-pit, the draft-door being left off, showing inclined grate and portion of the inlterior of the ash-pit with portion of the improved dumping mechanism. Fig. 5 is a side view of the improved grate-dumping attachment in position. Fig. 6 is a detail View of my grate-dumping device. Fig. 7 is a detailed view of-a/stop-nut, hereinafter more fully referred to. Fig. 8 is a View, on an enlarged scale, of the support for the forward end of the screw-rod.

Like letters denote like parts in all figures.

A is the ash-pit of afurnace. A frame, B, upon which any grate of ordinarywell-known form or construction may be placed,is hinged to the ash-pit by means of bolts or pins b. The other end of this frame is held up by means of levers C and C', mounted upon a common shaft, D, near the bottom, and extending through the walls a of the ash-pit A. These levers C and C' are secured at one end to the shaft D, and both in relatively the same position with regard to the frame B. The other ends of these levers have carrying-rollers c and-d, whereupon the frame B rests. One end of the shaft D extends far lenough through the ashpit to admit of a lever, E, being rigidly secured to the same with one end.` The other end of this lever is provided with abifurcated jaw,as plainly shown in Fig. 6. jaw goes a pin or'swivel-nut, e, which is held sidewise in position by the screw F, passing through this nut e, and which is of such diameter that the jaw will freely straddle the same. Two stop-nuts,f and f', are tightly secured upon the screw F. The non-threaded portion ofthe screw Fextends through aange, G, forming a portion of the ash-pit. Where this takes place the flange G is provided with a spherical boss, g, as shown in Fig. 5,having an elongated opening of the Width of the screw-stem and a length sufiicient to allow the screw-stem to vibrate in the same up and down. The non-threaded portion of the screw F has Through this IOO . C andC, which take the position as shown in a collar, f dished out and abutting against the spherical boss g. On the opposite side is the collar f fastened to the screw-stem.y This collar is likewise dished out spherically and rests against the spherical boss g, as plainly shown in drawings, Fig. 5. Behind this collar f the screw-stem is squared, or in some other well-known manner adapted to a crank, H. The screw F is double threaded.

The operation is as follows: When the grate is to be lowered from the positionvshown in Fig. 1 to that in Fig. 3,'the crank H isturned, and the lever E, which rests against the stop f on the screw F, travels tothcopposite stop, f, (this being the limit of its motion, lwhich is regulated by the position-stopsf and f,) as shown in Fig.`3. During the movement of the leverE from one `tothe other of its extreme yits position in a vertical plane.

E theshaft D is moved, and with it the levers Fig. 3. The frame B, which rests uponv the rollers c and c of the levers C and C', respectl ively, follows the downward motion of these rollers, and thereby takes the inclinedvvposi- 2 When the grate is yto be brought back to the position, Fig. l, the crank His turned in the opposite direction. The screw F is made double threaded,in order tion, as shown in Fig. 3.

to obtain a large movement with but a few turns of the crank. The stops f and f are also threaded, and in order to effect an efficient hold on the screw F,not easily liable to change position, the inventor has practiced to clamp them on the screw F by providing small ears to the stops f and f', splitting them between these ears, and tightening the same to the screw y F by means of abolt passed through the ears, as shown in Fig. 7 5 but any other convenient means may be adopted.

The advantages of the new dumping-grate consist in its simplicity and efficiency. The principal working parts are outside of the furnace, away from ashes and dust, and are thereby guarded against early destruction or liability to refuse service.` The whole apparatus is easily managed by unskillful persons, and being locked in any position which the swivel'nut may have upon the screw F, no unsuspected injury can be done if any un- Called andnninformed person should handle the crank. The stops f and fprevent undue amount of motion, and fix the limit of turns of the crank and the position of grate definitely.

Having thus described the invention, 'what we claim as new and useful isf Thev combination hereinbefore set forth, of a furnaceaslrpit having'a spherical boss, g, provided with an elongated slot, and provided with'a hinged grate or hinged frame for the reception of a grate, with shaft l), parallelto the axis of the hinge,levers C and C,provided with vrollers c and c" respectively, and a lever,

E, outside of the ash-pit, having swivel-nut e,

screw F, passing through the bossg and nut e,- and having stops f and f, and being secured from endwise motion by collars f" and f, tightly secured to screw Fand engaging with boss g, as and for the purpose described.

ln testimony whereof we have signed our names in the presence of two Witnesses.

Witnesses: E.. H. BAILEY, FERDINAND PHILirs. 

